My Security Planet » Schneier on Security » Ever Better Cryptanalytic Results Against SHA-1

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Schneier on Security

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  Ever Better Cryptanalytic Results Against SHA-1

  Posted: June 16th, 2009, 12:21pm CDT

  Tags:    [edit]

  The SHA family (which, I suppose, should really be called the MD4 family) of cryptographic hash functions has been under attack for a long time. In 2005, we saw the first cryptanalysis of SHA-1 that was faster than brute force: collisions in 269 hash operations, later improved to 263 operations. A great result, but not devastating. But remember the great...